I bought headphones in the amazon store, listened in the hall, from the unusual they did not immediately connect to the smartphone, but I did not attach any importance to this. I listened to the sound, I liked it, I immediately bought bluetooth version 5 for them, on the advice of the seller, he said that he would be perfect for them. Initially I wanted to buy wireless headphones for PC. Actually, after he came home, he began to connect them. I inserted the bluetooth adapter and turned on the search on the device. Could only find LE_WH-XB900N. But he doesn't consider it headphones. I decided not to invent anything of my own and follow the complete guide from Sony https://www. Sony. Ru/electronics/support/wireless-headphones-bluetooth-headphones/wh-xb900n/articles/00199243. He didn't help either. After that, I thought that the problem was in the bluetooth adapter and decided to connect to my laptop, which has a good built-in bluetooth version 3 and got a similar situation. Verdict - 3 hours of work + 14,000= not working headphones from Sony.
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